"Frosty asteroids and

Project Themis"

Richard Miles Director, BAA Asteroids and Remote Planets Section

BAA Joint Comet-Asteroid Meeting, Milton Keynes, 2012 October 6

Why frosty asteroids?

Active Asteroids: Location of Themis Family

(24) Themis

Phase brightening of asteroids and comet nuclei

Dependence of Opposition Effect on Surface Albedo

(24) Themis

Enigmatic Asteroid: (24) Themis

Project Themis and Project NeilBone

Themis-family asteroid

Project NeilBone-2

Themis-family asteroid

Project NB-3

Themis-family asteroids

SXVR-H18 + V Filter (25% scale) 0.10-m f/2.8 refractor, 11x60s

SXVR-H18 + V Filter (50% scale) 0.10-m f/2.8 refractor, 11x60s

SXVR-H18 + V Filter (100% scale) 0.10-m f/2.8 refractor, 11x60s

Track of asteroid (379) Huenna

VOLUNTEERS REQUIRED !